#include <iostream>
extern double warming;

void update(double df);
void local();

// using std::cout;
using namespace std;
// using std:: endl;

void update(double dt){
    extern double warming;
    warming += dt;
    cout << "support.cpp update()" << warming << endl;

}

void local(){
    double warming = 0.8;

    cout << "support.cpp local()" << warming << endl;
    cout << "support.cpp local()" << ::warming << endl;
}

